Is it normal for engine oil to turn black?
1 Answers
It is normal for engine oil to turn black after being used for a period of time. Engine oil has a cleaning function, and the blackening is caused by the removal of dirt inside the engine. Below are the functions and requirements of engine oil: Functions of engine oil: Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption in the engine. Advanced technology can convert natural gas into crystal-clean fully synthetic base oil, to which unique power cleaning technology is added, creating lubricants with superior cleaning and protective performance. Requirements for engine oil: As a type of machinery, engines have specific requirements for lubricants, similar to general machinery, such as appropriate viscosity, certain anti-oxidation, anti-wear, anti-corrosion, and viscosity-temperature properties.